Prevention is the new watchword, and our annual health issue looks at how to avoid illness rather than just treat it

It costs a lot more to fix something that's broken than it does to prevent it from breaking down in the first place. Our ailing health-care system is long past the point at which we can stop it from breaking down, and it will cost hundreds of billions of dollars to fix. But I trust it's different for most of us. When it comes to individual health care, the model these days is not treating illness but preventing it. The prescription is prevention. Three-quarters of our health-care costs are attributable to chronic, preventable diseases. The way to avoid them (as well...